package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.result.PageResult;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

@Service
public class DishServiceImpl implements DishService {
@Autowired
private DishMapper dishMapper;
@Autowired
private DishFlavorMapper dishFlavorMapper;
@Autowired
private SetmealDishMapper setmealDishMapper;

    @Override
    public void saveWithFlavor(DishDTO dishDTO) {
        // 保存菜品数据
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.insert(dish);
        // 关联菜品口味数据
        Long dishId = dish.getId();
        for (DishFlavor flavor : dishDTO.getFlavors()) {
            flavor.setDishId(dishId);
        }
        // 批量保存口味
        dishFlavorMapper.insertBatch(dishDTO.getFlavors());
    }

    @Override
    public PageResult pageQuery(DishPageQueryDTO dishPageQueryDTO) {
        PageHelper.startPage(dishPageQueryDTO.getPage(),dishPageQueryDTO.getPageSize());
        Page<Dish> page = dishMapper.pageQuery(dishPageQueryDTO);
        Long total = page.getTotal();
        List<Dish> records = page.getResult();
        return new PageResult(total,records);

    }

    @Override
    public void deleteBatch(List<Long> ids) {

        for (Long id : ids) {
            Dish dish = dishMapper.getById(id);
            if (dish.getStatus() == 1) {
                // 起售中的菜品不能删除
                throw new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);
            }
        }
   //判断当前菜品是否能够删除---是否被套餐关联了？？
        List<Long> setmealIds = setmealDishMapper.getSetmealIdsByDishIds(ids);
        if (setmealIds != null && setmealIds.size() > 0) {
            //当前菜品被套餐关联了，不能删除
            throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
        }

        dishMapper.deleteBatch(ids);
        dishFlavorMapper.deleteByDishId(ids);
    }

    @Override
    public void startOrStop(Integer status, Long id) {
        dishMapper.startOrStop(status,id);
    }

    @Override
    public void updateWithFlavor(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO, dish);
        dishMapper.update(dish);
        dishFlavorMapper.deleteByDishId(Collections.singletonList(dishDTO.getId()));
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if (flavors != null && !flavors.isEmpty())
        {  {
            flavors.forEach(dishFlavor -> dishFlavor.setDishId(dishDTO.getId()));
        }
            dishFlavorMapper.insertBatch(dishDTO.getFlavors());}
        }


    @Override
    public DishVO getById(Long id) {

     Dish dish = dishMapper.getById(id);
     DishVO dishVO = new DishVO();
     BeanUtils.copyProperties(dish,dishVO);
        return dishVO ;
    }

    @Override
    public List<DishVO> list(Integer categoryId) {
        List<DishVO> dishVOList = dishMapper.list(categoryId);
return dishVOList;
    }


    /**
     * 条件查询菜品和口味
     * @param dish
     * @return
     */
    public List<DishVO> listWithFlavor(Dish dish) {
        Integer categoryId = Math.toIntExact(dish.getCategoryId());
        List<DishVO> dishList = dishMapper.list(categoryId);

        List<DishVO> dishVOList = new ArrayList<>();

        for (DishVO d : dishList) {
            DishVO dishVO = new DishVO();
            BeanUtils.copyProperties(d,dishVO);

            //根据菜品id查询对应的口味
            List<DishFlavor> flavors = dishFlavorMapper.getByDishId(d.getId());

            dishVO.setFlavors(flavors);
            dishVOList.add(dishVO);
        }

        return dishVOList;
    }




}
